Resilient tire attachment for vehicle-wheels.



R E'. BUEDQNQ RBSILIENT TIRE ATTAGEML ENT FR VEHICLE APPLIOATIOI FILED DEG. 9, 1913.

I? 9mm au 26, 1915.

2 SHEETS-SHEET 1 l N VENTOR Wanda?,

A'YIORNRY WITNESSES:

P Ff, DUNDON. EESILIENT TIEE ATTACHMENT EOE VEHICLE WHEELS.

APPLIGATION PIL-ED DEU. 9, 1913.

VTNESSES:

INVENTOR .ArroRNnY was. fmcmnrn. c

'cated at?.

VUNITED STATES PATENT FFIGE.

PATRICK F. DUNDON, 0F SAN FRANCISCO,

CALIFORNIA.

nnsILIENr TIRE ATrAoHM-Enr For. VEHICLE-WHEELS.

Specification of Letters Patent.

Patented Jan. ae, reis.

Application led December 9, 1913. Serial No. 805,495.

To all @hom it may concern v B e 1t known that I, PATRICK F. DUNDON', a citizen of the United States, residing in the city and county of San Francisco and State of California, have invented new and useful Improvements in Resilient 'Tire Attachments for Vehicle-Wheels, of which thel the construction .and combination of parts as hereinafter more fullyv described 'and claimed, having reference' to .the accom' ion members'interposed between the outer floating ring and fellyl tire.` Fig. 5 is a side elevation of same. Fig. 6 is an enlarged fragmentary side elevation` ofthe outer floating-ring. Fig. 7 is a section on the line Y-Y of Fig.` 1l. .Fig 8 is a fragmentary section on the line Z--Z of Fig. 1. Fig. 9 is a perspective viewv of the keyretainingbracket. Fig. 10 is a perspective view of the key. Fig. 11' is a detail view of the metaltire.

In the drawings A indicates the hub, 2 the spokes and 3 the felly of a standard formv of wheel. Suitably secured to the outer periphery of the felly is a metal tire 4, pref# erably a little wider than the felly, and sur'-v rounding the tire in spaced concentric po'- sition with relation to same is apsecondary tireor fioating ring 5 on which is mounted a .solid tire 6 of suitable construction.

Interposcd between the outer `floating ring 5 and the main tire' 4 are a suitable number of resilient rubber cushions, generally indi- The construction of these rubber cushions is more clearly illustrated by referring to Figs. 1 to 5, inclusive. These cushions consist of a central main web 8, having projecting ribs 9 and 10 formed on its `upper and lower surfaces, preferably placed in a.l dia onal position, as indicated Fig. 4. The oating ring 5, together with the rubber cushion's7, are held in position with relation lto the inner tire 4 bya pair of annulai1 side plates 11 and 12 which are inv turn secured to the outer ring 5 by bolts 13, having peripheries bent to grip the tire 6.

4Extending across the inner surface of the floating ring 5 in spaced position with re-4 lation -to each other, are inwardly extending channeled bolt housings 14, through which and the side plates 11 and 12 the, boltsare adapted to pass. The openings formed-"on the side plates are preferably square lforthe purpose of permitting the insertion ofbolts having square shanks. The'side'plates `V11 and 12, together l with the floating tire ring 5, are thus securely locked together and any turning movement 'ofthel bolts or loosening ofl the nuts is practically prevented-by reason of the construction provided. The outer annular plates 11 and;i2 are further locked against creeping or -peripheral movement with relation to the rin 5 by having recesses 15 formed therein, which are adapted At'oregister with the ends ofthe inwardly extending bolt housings 14. Channels are formed across the abutting ends ofthe resilient cushions and the housings 14 'pass through these 'channels from sidel to side, thus preventing the cushions from creeping or becoming displaced. The side plates 11 and 12 are also provided with a suitable number of recesses, indicated at 16, (see Figs. Vl and 8), which recesses are adapted to receive and retain av suitable .packing 17, such as felt which is riveted to the side plates; this being provided for the purpose of preventing any rattling or noise between the side plates and the inner tire 4. The inner tire 4 'is similarlysurrounded 'by a' ring of felt or like material, as at 18, for the urpose of further preventing any rattling etween the different parts and also vfor the purpose of packing the inner space against the admission of water or dust.

Secured t`o the inner felly 3 in two or more places, as indicated at 19 and 20, o n opposite sides of the face of the felly, as indicated in Fig. 2, are bracket members 2l provided with dovetailed slots 22; and se'- cured to the `innerfacesof the side plates 1'1- and 12 are key members 23 which are also slightly dovetailed in cross section... .The bracket members 21, together with the keys 23, are more clearly shown by referring to tire 6. However, a radial movement be-vA area formed in the brackets 21 with rela- Figs. 9 and 10; here it can be seen that the keys 23 lare considerably narrower than the.

slots 22, the object of this construction be-4 'ing as follows: The bracket members 21, together with the keys 23, are provided for the purpose of limiting peripheral movement between the inner felly and the side plates 11 and 12 with connected ring 5 and tween the inner tire 4 and the outer housing, which comprises the .side lplates and tire.

before mentioned, is desirable, and may be obtained by the lock construction provided through the connection of the brackets 21 and the keys 23. The considerable wider tion to the keys 23 is provided. for the pur.- pose of permitting a certain amount of,play between the brackets and keys when these assume the horizontal position indicated at Xd-X, Fig. 1; this being necessary to permit the resilient action of the outer tire with relation to the inner tire and 'felly. The dovetail slots formedl in the brackets 21 may' be lined with a suitable packing `material, indicated at 24, such as leather, rubber, i

orother suitable material, toprevent actual `Contact between the metal ofthe keys and brackets, thus obviating any rattling noises atv this point. The keys, together with the brackets 21,-may be suitably secured to their respective parts by welding, riveting, bolting, or similar means. It can also beV seen vthat-the tire 4, by referring to Fig. 2, is notched at the edge, as at 26, to permit the insertion of the bracket members 21, and also for the purpose of further securing these against twisting strain. The dovetail shape of the ,registering keys and slots is provided for the purpose of preventing the keys from slipping out of the slots when the strain is applied. It can easily be seen that y by providing the dovetail-shaped slots and place and position and revolve in either direction with the wheel. No special design of wheel is required, but it is preferable to have the wheel tire wider than the felly.

The wheel, as here shown, has an annular continuous chamber, without obstructions or interruptions, formed thereon, and no impeding. projections' upon the base surfaces where the cushions have their foundation. The resilient vv,cushions and` sections extend continuously over the full circumlference, 4and the angular position of the ribs formed thereon will thus afford resiliency and bearing surfaces at every vpoint of the circumference of the wheel. The bolted side plates are securely kept equal `distances Aapart by the binding bolts ,andA

the floating ring 5, thusv preventing any binding of the wheel tire which will always .be slightly narrower than the :space between the side plates.

It is further evident that thev cushion members contained within the housing' are 1 free from any tensile strain for the reason lower half of the wheel. The cushion members and other connected parts may be'easily .that compression-'takes -place yonly at the L removed orreplaced for the purpose of ret newal orv examination, if necessary, even'l by. the most unskilled person, as .it is only necessary to remove one side plate for this purpose.

The materials 'including concentric interspaced rings, the

. felly, an in#-` inner of which lits the wheel terposed cushion of resilieli rtterial, annular side plates-fixed to and.v i''able with the outer ring 'by the. compression of the intermediate cushion, channeled bracket members secured to the sides of the felly, and dovetailed keys fixed to the inner faces of the plates to allow compression and limit peripheral movement between said members, the side plates being recessed on'their inner faces and provided with iieXible' wear pla-tes arranged in said recesses.

2. In combination with a wheel and lcushioning means on the felly thereof, a tire engaged with the cushioning means, transverse housings formed on the inner circumference of the tire, side plates engagedwith the tire, and bolts passed through the side plates and housings, said side plates having outwardly extending sockets into which the ends of the housings project and said cushioning means having transverse channels into which said housings extend to prevent creeping of said cushioning means.

c 3. In combination with a -wheel and cushioning means on the felly thereof, a tire engaged withk the cushioning means, side plates secured' to thetire, brackets formed independent' of the felly and secured Vto/the side yfa'cesfof the felly and projecting outand finish of the several parts of the tire arevsuchas the judgmentv Wai'dly from said side faces and having In testimony whereof have hereunto set slots which extend radially of the Wheel, my hand in the presence of two subscribing and keys also disposed radially of the Witnesses.

Wheel and secured to the innei1 faces of the PATRCK F. DUNDON. side plates secured to the tire, said keys be- "Witnesses:

ing narrower than the slots so as to move CHARLES EDELMAN,

laterally thereof, and engaged in the latter. C. C. COOK.

Copies of this patent may be obtained for ve cents each, 'by addressing the Commissioner of Patente,

Washington, D. C. 

